The reaction time of TAS mainly depends on the number and velocity of target, and is little effected by the frame period of searching.

采用TAS跟踪方式时，反应时间主要取决于目标个数和速度，与搜索帧周期关系不大。

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The frame period of satellite image changes suddenly, a positioning aperture technique is implemented to reliably acquire the frame period.

卫星云图的帧周期变化，数据是突发性的。为了提取帧同步信号，研制出“定位孔径技术”，可靠地提取帧同步信号。

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These raised it a few centimetres over a period of several days, as the lifting frame rose slowly up its four legs.

在几天的时间内，随着升降架的四只脚架慢慢升起，这些东西将它抬高了几厘米。

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Nash studied the works of seven important painters who lived during a one hundred year period, a time frame similar to that of jazz.

VOA: special.2010.03.24

Second-row Charteris then levelled the scores when he stretched his 6ft 10in frame over in virtually the same spot after a period of heavy Dragons pressure.

BBC: Dragons 22-15 Calvisano

Arimidex failed another test as well: Data show that the two drugs given together worked no better than tamoxifen alone over a three-year period--even though Arimidex bested tamoxifen over the same time frame.

FORBES: Searching For An Heir To Tamoxifen

Nabokov made an in-close save on Victor Hedman in the second period, and Tavares had a power-play goal midway through the frame to help the Islanders improve to 4-1-2 over their last seven games.

WSJ: Isles' Nabokov earns 54th shutout in win over TB